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        This example uses OpenLayers v<span>4.6.5</span>. The <a id="latest-link" href="#" class="alert-link">latest</a> is v<span id="latest-version"></span>.
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          <h4 id="title">Permalink</h4>
          <div id="map" class="map"></div>

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        <div class="span12">
          <p id="shortdesc">Example on how to create permalinks.</p>
          <div id="docs"><p>In this example the <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Manipulating_the_browser_history" target="_blank">HTML 5 History API</a> is used to update the browser URL with the current zoom-level, center and rotation when the map is moved. Note that the History API is not supported in <a href="http://caniuse.com/#feat=history" target="_blank">all browsers</a>, one might consider to use a <a href="https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills#html5-history-api-pushstate-replacestate-popstate" target="_blank">a polyfill</a>.</p>
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          <div id="api-links">Related API documentation: <ul class="inline"><li><a href="../apidoc/ol.Map.html" title="API documentation for ol.Map">ol.Map</a></li>,<li><a href="../apidoc/ol.View.html" title="API documentation for ol.View">ol.View</a></li>,<li><a href="../apidoc/ol.control.html" title="API documentation for ol.control">ol.control</a></li>,<li><a href="../apidoc/ol.layer.Tile.html" title="API documentation for ol.layer.Tile">ol.layer.Tile</a></li>,<li><a href="../apidoc/ol.source.OSM.html" title="API documentation for ol.source.OSM">ol.source.OSM</a></li></ul></div>
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        <form method="POST" id="codepen-form" target="_blank" action="https://codepen.io/pen/define/">
          <textarea class="hidden" name="title">Permalink</textarea>
          <textarea class="hidden" name="description">Example on how to create permalinks.</textarea>
          <textarea class="hidden" name="js">// default zoom, center and rotation
var zoom &#x3D; 2;
var center &#x3D; [0, 0];
var rotation &#x3D; 0;

if (window.location.hash !&#x3D;&#x3D; &#x27;&#x27;) {
  // try to restore center, zoom-level and rotation from the URL
  var hash &#x3D; window.location.hash.replace(&#x27;#map&#x3D;&#x27;, &#x27;&#x27;);
  var parts &#x3D; hash.split(&#x27;/&#x27;);
  if (parts.length &#x3D;&#x3D;&#x3D; 4) {
    zoom &#x3D; parseInt(parts[0], 10);
    center &#x3D; [
      parseFloat(parts[1]),
      parseFloat(parts[2])
    ];
    rotation &#x3D; parseFloat(parts[3]);
  }
}

var map &#x3D; new ol.Map({
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    })
  ],
  controls: ol.control.defaults({
    attributionOptions: {
      collapsible: false
    }
  }),
  target: &#x27;map&#x27;,
  view: new ol.View({
    center: center,
    zoom: zoom,
    rotation: rotation
  })
});

var shouldUpdate &#x3D; true;
var view &#x3D; map.getView();
var updatePermalink &#x3D; function() {
  if (!shouldUpdate) {
    // do not update the URL when the view was changed in the &#x27;popstate&#x27; handler
    shouldUpdate &#x3D; true;
    return;
  }

  var center &#x3D; view.getCenter();
  var hash &#x3D; &#x27;#map&#x3D;&#x27; +
      view.getZoom() + &#x27;/&#x27; +
      Math.round(center[0] * 100) / 100 + &#x27;/&#x27; +
      Math.round(center[1] * 100) / 100 + &#x27;/&#x27; +
      view.getRotation();
  var state &#x3D; {
    zoom: view.getZoom(),
    center: view.getCenter(),
    rotation: view.getRotation()
  };
  window.history.pushState(state, &#x27;map&#x27;, hash);
};

map.on(&#x27;moveend&#x27;, updatePermalink);

// restore the view state when navigating through the history, see
// https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onpopstate
window.addEventListener(&#x27;popstate&#x27;, function(event) {
  if (event.state &#x3D;&#x3D;&#x3D; null) {
    return;
  }
  map.getView().setCenter(event.state.center);
  map.getView().setZoom(event.state.zoom);
  map.getView().setRotation(event.state.rotation);
  shouldUpdate &#x3D; false;
});
</textarea>
          <textarea class="hidden" name="css"></textarea>
          <textarea class="hidden" name="html">&lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
</textarea>
          <input type="hidden" name="resources" value="https://openlayers.org/en/v4.6.5/css/ol.css,https://openlayers.org/en/v4.6.5/build/ol.js">
          <input type="hidden" name="data">
        </form>
        <pre><code id="example-source" class="language-markup">&lt;!DOCTYPE html&gt;
&lt;html&gt;
  &lt;head&gt;
    &lt;title&gt;Permalink&lt;/title&gt;
    &lt;link rel="stylesheet" href="https://openlayers.org/en/v4.6.5/css/ol.css" type="text/css"&gt;
    &lt;!-- The line below is only needed for old environments like Internet Explorer and Android 4.x --&gt;
    &lt;script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"&gt;&lt;/script&gt;
    &lt;script src="https://openlayers.org/en/v4.6.5/build/ol.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;div id&#x3D;&quot;map&quot; class&#x3D;&quot;map&quot;&gt;&lt;/div&gt;
    &lt;script&gt;
      // default zoom, center and rotation
      var zoom &#x3D; 2;
      var center &#x3D; [0, 0];
      var rotation &#x3D; 0;

      if (window.location.hash !&#x3D;&#x3D; &#x27;&#x27;) {
        // try to restore center, zoom-level and rotation from the URL
        var hash &#x3D; window.location.hash.replace(&#x27;#map&#x3D;&#x27;, &#x27;&#x27;);
        var parts &#x3D; hash.split(&#x27;/&#x27;);
        if (parts.length &#x3D;&#x3D;&#x3D; 4) {
          zoom &#x3D; parseInt(parts[0], 10);
          center &#x3D; [
            parseFloat(parts[1]),
            parseFloat(parts[2])
          ];
          rotation &#x3D; parseFloat(parts[3]);
        }
      }

      var map &#x3D; new ol.Map({
        layers: [
          new ol.layer.Tile({
            source: new ol.source.OSM()
          })
        ],
        controls: ol.control.defaults({
          attributionOptions: {
            collapsible: false
          }
        }),
        target: &#x27;map&#x27;,
        view: new ol.View({
          center: center,
          zoom: zoom,
          rotation: rotation
        })
      });

      var shouldUpdate &#x3D; true;
      var view &#x3D; map.getView();
      var updatePermalink &#x3D; function() {
        if (!shouldUpdate) {
          // do not update the URL when the view was changed in the &#x27;popstate&#x27; handler
          shouldUpdate &#x3D; true;
          return;
        }

        var center &#x3D; view.getCenter();
        var hash &#x3D; &#x27;#map&#x3D;&#x27; +
            view.getZoom() + &#x27;/&#x27; +
            Math.round(center[0] * 100) / 100 + &#x27;/&#x27; +
            Math.round(center[1] * 100) / 100 + &#x27;/&#x27; +
            view.getRotation();
        var state &#x3D; {
          zoom: view.getZoom(),
          center: view.getCenter(),
          rotation: view.getRotation()
        };
        window.history.pushState(state, &#x27;map&#x27;, hash);
      };

      map.on(&#x27;moveend&#x27;, updatePermalink);

      // restore the view state when navigating through the history, see
      // https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onpopstate
      window.addEventListener(&#x27;popstate&#x27;, function(event) {
        if (event.state &#x3D;&#x3D;&#x3D; null) {
          return;
        }
        map.getView().setCenter(event.state.center);
        map.getView().setZoom(event.state.zoom);
        map.getView().setRotation(event.state.rotation);
        shouldUpdate &#x3D; false;
      });
    &lt;/script&gt;
  &lt;/body&gt;
&lt;/html&gt;</code></pre>
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